TMC2072-MT SMSC, TMC2072-MT Datasheet - Page 28

• Manufacturer Part Number: TMC2072-MT
• Description: IC CTRLR CIRC 100-TQFP DUAL MODE
• Manufacturer: SMSC
• Series: CircLink™r

Specifications of TMC2072-MT

• Controller Type: I/O Controller
• Interface: Transceiver
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 40mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1023

2.4.3
NOTE:
2.5
NOTE:
Revision 0.1 (06-07-07)
PAGE SIZE
256 Byte
128 Byte
Reduction of Reconfiguration Burst Signal Send Time.
Since the CircLink maximum packet size is smaller than for ARCNET, the reconfiguration burst signal is of
shorter duration, reducing the time required for network reconfiguration as listed in the table below:
Above “Burst Signal Sending Time” is the time for operation at 2.5 Mbps. The time is half at 5 Mbps.
RAM Page Expansion
The original ARCNET buffer RAM is divided into 256 or 512-byte per a page. This configuration has a
maximum of four pages available in 1 kByte increments, leaving the majority of the RAM unused when
small data packets are used The CircLink RAM addressing has been modified to significantly expand the
available RAM page numbers and to store pages corresponding to the node IDs on the network as listed in
the table below.
*
64 Byte
32 Byte
1
: Node ID = 00 is used only for the system development and is not available for users.
ARCNET
CircLink
PS[1:0]
() : Data Size
00
01
10
11
--
--
PS[1:0]
Table 2 - Number of Nodes and RAM Page Size
00
01
10
11
MAX Packet Size
MAX Packet Size
256(253)Byte
128(125)Byte
512(508)Byte
64(61)Byte
32(29)Byte
DATASHEET
NODE ID (MIN)
01h
01h
01h
01h
Page 28
*1
Burst Signal Sending Time
Burst Signal Sending Time
NODE ID(MAX)
0Fh
1Fh
03h
07h
1.63ms
1.07ms
0.79ms
0.65ms
2.75ms
Peripheral Mode CircLink™ Controller
PAGE ADDRESS
100h X ID
80h X ID
40h X ID
20h X ID
SMSC TMC2072
Datasheet